Asteroids

2017SS14 help

Last update: 2024-04-18 21:05 UTC

Orbital Properties

Epoch

60400.0

MJD

Orbit type

Apollo

Perihelion (q)

1.010

Aphelion (Q)

4.046

Eccentricity (e)

0.601

Inclination (i)

4.7

deg

Orbit period (P)

1467.9

Earth MOID

0.01238

U parameter

8.4

Next Earth close approach

Date

2025-10-02

Nominal distance (from Earth center)

0.12176

18215319

Maximum Brightness

24.5

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

26.8

mag

Diameter

12 - 26*

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2017-09-24

Observatory

Mt. Lemmon Survey

Orbit Visualiser

Click the button to start Orbit Visualiser

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Long. of Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion distance
Aphelion distance
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

60400.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

2.527739

1-sigma variation

0.008124

Unit

Eccentricity (e)

Value

0.600574

1-sigma variation

0.000973

Unit

Inclination (i)

Value

4.6717

1-sigma variation

0.0115

Unit

Long. of Ascending Node (Ω)

Value

352.0468

1-sigma variation

0.0438

Unit

Arg. of Perihelion (ω)

Value

343.7546

1-sigma variation

0.5050

Unit

Mean Anomaly (M)

Value

230.65279

1-sigma variation

1.42091

Unit

Perihelion distance

Value

1.009644

1-sigma variation

Unit

Aphelion distance

Value

4.045833

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.019838

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

2.822961

1-sigma variation

Unit

MOID

Value

0.012379

1-sigma variation

Unit

Orbit Period

Value

1467.9007

1-sigma variation

Unit

U parameter

Value

8.4

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	6.60060E-5	7.90885E-6	9.33219E-5	-3.55661E-4	4.10215E-3	1.15440E-2
e	7.90885E-6	9.47696E-7	1.11857E-5	-4.26023E-5	4.91470E-4	1.38321E-3
i	9.33219E-5	1.11857E-5	1.32224E-4	-5.01905E-4	5.79624E-3	1.63216E-2
Ω	-3.55661E-4	-4.26023E-5	-5.01905E-4	1.91963E-3	-2.21159E-2	-6.22023E-2
ω	4.10215E-3	4.91470E-4	5.79624E-3	-2.21159E-2	2.54988E-1	7.17438E-1
M	1.15440E-2	1.38321E-3	1.63216E-2	-6.22023E-2	7.17438E-1	2.01898E0

Date of computation: 2024-02-21 14:29 UTC

Note: The ASCII file is in a format suitable for Orbfit input.

Download ASCII file:

Physical properties

Rotation Period
Quality
Amplitude
Rotation Direction
Spinvector L
Spinvector B

Rotational properties

Value

Unit

Source

Rotation Period

Value

Unit

Source

[-]

Quality

Value

Unit

Source

[-]

Amplitude

Value

Unit

mag

Source

[-]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

26.8

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.05 - 0.25

Unit

Source

[2]

Diameter

Value

12 - 26*

Unit

Source

[2]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Unit

Source

[-]

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Sources

No.	Name	Additional
[1]	ESA ODIM	ESA orbit determination and impact monitoring system
[2]	Estimation	Estimated from absolute magnitude

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

Unit

Source

[1]

Unobserved

Value

2396

Unit

Source

[1]

Normalized RMS of residuals

Value

0.605694

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2017-09-24.25979

Unit

Source

[2]

Last Observation

Value

2017-09-27.31348

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

22 (0)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

Unit

Source

[3]

Last Observation

Value

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[1]

Doppler (Discarded)

Value

0 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

0 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA ODIM	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Close approaches for 2017SS14 from 1950 to 2124

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possibile distance in au	Distance uncert. in au
EARTH	2005-08-29 20:09	> 1 mo	0.0238108	0.0089450	0.3274480
EARTH	2009-09-03 23:22	> 1 mo	0.0169348	0.0127523	0.0997291
EARTH	2013-08-29 12:54	> 1 mo	0.0243542	0.0084845	0.0643544
EARTH	2017-09-17 15:25	< 1 min	0.0304853	0.0302305	0.0000849
EARTH	2021-09-17 05:12	> 1 mo	0.0257924	0.0079560	0.1157616
EARTH	2025-10-02 14:15	> 1 d	0.1217619	0.0043470	0.0574545
EARTH	2082-09-15 17:52	> 1 mo	0.0900157	0.0359918	1.0418685
EARTH	2123-08-07 12:32	> 1 mo	0.1089027	0.0264859	0.5292999

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